Beam Steering with a Nonlinear Optical Phased Array
Antenna
Posted on 2019-08-23 - 21:14
Transition
metal dichalcogenides (TMDCs) exhibit high second harmonic
(SH) generation in the visible due to their noncentrosymmetric crystal
structure in odd-layered form and direct bandgap transition when thinned
down to a monolayer. In order to emit the SH radiation into a desired
direction, one requires a means to control the phase of the in-plane
nonlinear polarization. Here, we couple the SH response of a monolayer
MoS2 to an optical phased array antenna and demonstrate
controllable steering of the nonlinear emission. By exploiting the
intrinsic SH generation by the phased array antenna we achieve uniform
emission efficiency into a broad angular range. Our work has relevance
for novel optoelectronic applications, such as programmable optical
interconnects and on-chip LIDAR.
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Busschaert, Sebastian; Flöry, Nikolaus; Papadopoulos, Sotirios; Parzefall, Markus; Heeg, Sebastian; Novotny, Lukas (2019). Beam Steering with a Nonlinear Optical Phased Array
Antenna. ACS Publications. Collection. https://doi.org/10.1021/acs.nanolett.9b02029
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AUTHORS (6)
SB
Sebastian Busschaert
NF
Nikolaus Flöry
SP
Sotirios Papadopoulos
MP
Markus Parzefall
SH
Sebastian Heeg
LN
Lukas Novotny